Rolls for rolling three-flanged slot-rails



No Model.) 2 Sheets-Sheet 1.

F. COLLEY. ROLLS FOR ROLLING THREBFLANGED SLOT RAILS. NO. 401,691. Patnted Apr. 16', 1889.

w I N jg Q I, L ffiio I v I i a S N r J i gr t ii'nessesx Invanibr (No Model.) 2 Sheets-Sheet 2.

F. UOLLEY. ROLLS FOR ROLLING THREE FLANGED SLOT RAILS. No. 401,691. Patented Apr. 16', 1889.

Fig? 2.

UNITED STATES PATENT OFFICE.

FREDERICK OOLLEY, OF JOHNSTOl/VN, PENNSYLVANIA, ASSIGNOR TO THE JOHNSON STEEL STREET RAIL COMPANY, OF KENTUCKY.

ROLLS FOR ROLLING THREE-FLANGED SLOT-RAILS.

SPECIFICATION forming part of Letters Patent No. 401,691, dated April 16, 1889. Application filed November 16, 1888- Serial No. 290,986. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK CoLLEY, of J ohnstown, in the county of Oambria and State of Pennsylvania, have invented a new and useful Improvement in Rolls for Rolling Three-Flanged SlotRails, which invention is fully set forth and illustrated in the following specification and accompanying drawings.

The object of this invent-ion is sufficiently expressed in its title.

The invention will first be described in detail in the specification, and then particularly set forth in the claim.

In the accompanying drawings, Figure 1 illustrates, in front elevation, a pair of forming or roughing rolls, the upper roll being indicated by the letter A and the bottom roll by the letter a. Fig. 2 illustrates, in front elevation, a pair of finishing-rolls, the upper roll being indicated by the letter B and the bottom roll by the letter Z).

In said figures the several parts to be described are indicated by letters and numbers of reference as follows: The hot metal, in the form of a bloom or ingot, is passed consecutively through the passes in the rolls marked 1 to 8, inclusive, the pass N0. 8 giving the shape of the finished rail of the desired seetional form. In these passes the metal is rolled throughout without being turned, thus dispensing with considerable labor that would otherwise be required. In all of said passes a rapid formation of the two horns H h, together with the flange portion F of the metal being rolled, is eifected by putting a heavy draft on the mass of metal, and at the same time preventing it from flowing sidewise, the prevention of the side flow forcing the ma terial into these said portions.

It will be observed that in the passes from No. 1 to No. 6, inclusive, the relation of the angle f to the horn h is maintained, but that in pass No. 7 the location of the angle f is thrown directly under that of the horn h, whereas in pass N o. 8 said location is thrown to 5 the left of the horn h. By this means the material which in the process of rolling tends to be wire-drawn away from the horn portion H is forced up and into the same, for it will be seen that in the passes named every change in the location of the angle f has the effect of throwing a low point into What is relativelya higher portion of the roll-surface, the result of which is a thrust upward into the horn portion H, that would not occur were this angle inaintained at one relative point of the horn II. This action is effected toward the end of the process, because the wire-drawin g tendency is greater in this part of the process than in the earlier part of the same.

I do not limit myself to the exact number or distribution of passes shown in the drawings, as the number of passes and their distribution into roughing and finishing passes is toa great extent arbitrary,being influenced by the length and diameter of the rolls, a light train of rolls calling for more passes with lighter draft than a heavy roll-train.

It is also evident that the rolls can, if desired, be made three-high instead of twohigh, as shown in the drawings.

Having thus fully described my said improvement, as of my invention I claim Rolls for rolling three-flanged slot-rails, provided with passes having conformations substantially of the forms described, for the purposes set forth.

FRED. OOLLEY.

Witnesses:

A. MONTGOMERY, W. MCLAIN. 

